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A Geometric Barycenter-Based Clutter Suppression Method for Ship Detection in HF Mixed-Mode Surface Wave Radar

1
Institute of Electronic and Engineering Technology, Harbin Institute of Technology, Harbin 150001, China
2
Collaborative Innovation Center of Information Sensing and Understanding at Harbin Institute of Technology, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2019, 11(9), 1141; https://doi.org/10.3390/rs11091141
Received: 10 April 2019 / Revised: 9 May 2019 / Accepted: 9 May 2019 / Published: 13 May 2019
(This article belongs to the Special Issue Remote Sensing for Maritime Safety and Security)
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Abstract

The nonhomogeneous clutter is a major challenge for ship detection in high-frequency mixed-mode surface wave radar. In this paper, a geometric barycenter-based reduced-dimension space-time adaptive processing method is proposed to suppress the clutter. Given the measured dataset, the range correlation of sea clutter is first investigated. Then, joint domain localized processing is applied to solve the training samples starve scenario in a practical system. The geometric barycenter-based training data selector is presented to select valid training samples and improve the accuracy of the clutter covariance matrix estimation. Finally, the validity of the proposed method is verified using the experimental data and the results show that it outperforms the conventional method in the nonhomogeneous environment of a practical system. View Full-Text
Keywords: HF OTHR; geometric barycenter; clutter suppression; ship detection; HF surface wave radar; space-time adaptive processing HF OTHR; geometric barycenter; clutter suppression; ship detection; HF surface wave radar; space-time adaptive processing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhang, J.; Zhang, X.; Deng, W.; Ye, L.; Yang, Q. A Geometric Barycenter-Based Clutter Suppression Method for Ship Detection in HF Mixed-Mode Surface Wave Radar. Remote Sens. 2019, 11, 1141.

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